Being a professional is doing the things you love to do,
including on the days you don’t feel like doing them.
—Julius Irving

If you think a professional is expensive, wait until you try an amateur.
—Paul “Red” Adair

The professional has learned that success, like happiness,
comes as a byproduct of work.
The professional concentrates on the work and allows rewards to
come or not come, whatever they like.
—Steven Pressfield

It’s not wise to violate rules until you know how to observe them.
—T. S. Eliot

My idea of professionalism is probably a lot of people’s idea of obsessive.
—David Fincher

Rules are not necessarily sacred, principles are.
—Franklin D. Roosevelt

The best augury of a man’s success in his profession is
that he thinks it the finest in the world.
—George Eliot

Live one day at a time, emphasizing ethics rather than rules.
—Wayne Dyer

Ethical behavior is doing the right thing when no one else is watching
—even when doing the wrong thing is legal.
—Aldo Leopold

I hold every man a debtor to his profession.
—Francis Bacon

A professional writer is an amateur who didn’t quit.
—Richard Bach

The young man knows the rules, but the old man knows the exceptions.
—Oliver Wendell Holmes

Professionalism is knowing how to do it, when to do it, and doing it.
—Frank Tyger

Never let your sense of morals prevent you from doing what is right.
—Isaac Asimov

Believe passionately in what you do, and never knowingly compromise
your standards and values. Act like a true professional, aiming for true excellence,
and the money will follow.
—David Maister

No man ever reached to excellence in any one art or profession without having
passed through the slow and painful process of study and preparation.

Do not hire a man who does your work for money,
but him who does it for love of it.
—Henry David Thoreau

If moral behavior were simply following rules,
we could program a computer to be moral.
—Samuel P. Ginder

Professionalism is not about adherence to the policies of a bureaucracy.
Professionalism is about having the integrity, honesty, and sincere regard for the
personhood of the customer, in the context of always doing
what is best for the business.
Those two things do not need to be in conflict.
—Eric Lippert

Management is doing things right; leadership is doing the right things.
—Peter Drucker

A man is truly ethical only when he obeys the compulsion to help all life
which he is able to assist, and shrinks from injuring anything that lives.
—Albert Schweitzer

Relativity applies to physics, not ethics.
—Albert Einstein

Even the most rational approach to ethics is defenseless
if there isn’t the will to do what is right.
—Alexander Solzhenitsyn

To see what is right and not to do it is cowardice.

In law a man is guilty when he violates the rights of others.
In ethics he is guilty if he only thinks of doing so.
—Immanuel Kant

What you cannot enforce, do not command.